JP2004265708A

JP2004265708A - Ceiling direct mount type lighting apparatus

Info

Publication number: JP2004265708A
Application number: JP2003054147A
Authority: JP
Inventors: Takuya Shinoda; 卓哉信田; Hiroki Nakao; 宏樹中尾
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2003-02-28
Filing date: 2003-02-28
Publication date: 2004-09-24
Anticipated expiration: 2023-02-28
Also published as: JP4244660B2

Abstract

<P>PROBLEM TO BE SOLVED: To give indirect illumination to the surroundings of a ceiling direct mount type lighting apparatus and enable to change easily the indirect lighting color and light distribution in the surrounding of the lighting apparatus. <P>SOLUTION: This is a lighting apparatus 4 of the ceiling direct mount type in which a translucent under cover 3 is fitted to the underneath of an apparatus body 2 having a discharge lamp 1. The center part of the apparatus body 2 becomes an adhesion part 13 to be adhered to the ceiling 5 and the surrounding becomes a non-contact part 7 for forming a gap 6 between the ceiling 5 without adhering to the ceiling 5. An opening 8 for taking light is provided toward the upper position of the discharge lamp 1 of the non-contact part 7. A translucent cover 9 for covering the light taking opening 8 is provided detachably on the non-contact part 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、天井直付け型照明器具に関するものである。
【０００２】
【従来の技術】
従来から天井に直付けする照明器具は、器具本体の下側にグローブと称される透光性の下カバーを取付けたもので、器具本体の中央部を天井に密着して取付けている。（例えば特許文献１参照）
ところが上記の従来例にあっては、器具本体の下面側の透光性の下カバーを光が透過して照明器具の下方を照明するだけであった。つまり、器具本体の中央部以外は天井との間に隙間があり、この器具本体と天井との間の隙間が暗い影となっていた。
【０００３】
また、他の従来例としては図１９、図２０に示すような天井直付け型照明器具も知られている（非特許文献１参照）。この図１９、図２０に示す従来例は、取付け金具５０、内側本体５１、上透光カバー５２を一体に固定した外側本体５３の３部材により器具本体５４を構成し、天井５’に取付けた配線部品１２を囲むように取付け金具５０を天井５’に取付け、取付け金具５０に内側本体５１をねじ５５により取付け、次に、内側本体５１に上透光カバー５２を固定した外側本体５３をねじ５６により取付け、上記のようにして天井５’に取付けた器具本体５４に透光性の下カバー５７を取付けるようになっている。
【０００４】
この図１９、図２０に示す従来例は器具本体５４の外周部の天井５’と密着していない非密着部５８に上透光カバー５２を器具本体５４に備えた放電灯１’の光が透過して上透光カバー５２と天井５’との間の隙間５９を照らして天井直付け型照明器具の周囲を間接照明するようになっている。
【０００５】
ところが、この従来例にあっては、器具本体５４の天井５’への取付けに当たって上記のようにねじ５５、５６による数度の取付け作業が必要であり、取付けが面倒であるだけでなく、いったん天井５’に取付けた後にはねじ５５、５６による取付けであるため、天井５から容易には素人では取り外すことができないのみならず上透光カバー５２は外側本体５３に固着してあって取り外して交換することができず、いったん天井直付け型照明器具を天井５’に取付けた後は、上透光カバー５２による間接光色や配光が固定されてしまいって居住者自身で上透明カバーによる間接光色や配光を変えることが出来ないという問題があった。また、図１９、図２０に示す従来のものにおいては、下カバー５７と器具本体５４との取付け部分において両者の間に隙間５９がある非密閉構造のものであるため、虫が侵入し、掃除やメンテナンスを頻繁に行わなければならないという問題があった。
【０００６】
【特許文献１】
特開平８−３１２１４号公報
【非特許文献１】
松下電工株式会社照明分社住宅照明事業部発行のカタログ「ＬＩＧＨＴＩＮＧＭＯＤＥ」Ｅｘｐｅｒｔ、２００２，２００３年版のＢ６２−Ｂ６５
【０００７】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、簡単な構成で天井直付け照明器具の周囲を間接照明できると共に、照明器具の周囲における間接光色や配光が簡単に変更でき、また、防虫構造にできて省メンテナンスが実現でき、また、薄型化が図れ、更に環状をした放電灯の径の異なるものに対応できる天井直付け型照明器具を提供することを課題とするものである。
【０００８】
【課題を解決するための手段】
上記課題を解決するために本発明に係る天井直付け型照明器具は、放電灯１を備えた器具本体２の下方に透光性の下カバー３を取付けた天井直付け型照明器具４であって、器具本体２の中央部が天井５に密着する密着部１３となると共に周囲が天井５と密着することなく天井５との間に隙間６を形成するようにした非密着部７となり、上記非密着部７の放電灯１の上方位置に採光用開口部８を設け、非密着部７上に採光用開口部８を覆う透光性上カバー９を着脱自在に配設して成ることを特徴とするものである。
【０００９】
このような構成とすることで、放電灯１の光が透光性の下カバー３を透過して下方を直接照明するのに加え、天井直付け型照明器具４において器具本体２の非密着部７と天井５との間の隙間６に放電灯１からの光が透光性上カバー９を透過して隙間６が光ると共に天井直付け型照明器具４の周囲の天井下面付近を照らして下から見ると上記隙間６が光って天井直付け型照明器具４が浮いているように見える間接照明がなされるものであり、しかも、上記透光性上カバー９が着脱自在であるため、透光性上カバー９を交換して間接光色や間接光の配光を簡単に変更することができるものである。
【００１０】
また、透光性上カバー９を器具本体２にねじ具１０により取付け、器具本体２に下カバー３を支持するための下カバー受け１１をねじ具１０により取付け、上記透光性カバーを器具本体２に取付けるねじ具１０と、器具本体２に下カバー受け１１を取付けるねじ具１０とが共通のねじ具１０で兼用していることが好ましい。
【００１１】
このような構成とすることで、器具本体２に透光性上カバー９を着脱自在に取付けるためのねじ具１０を器具本体２に下カバー受け１１を取付けるためのねじ具１０と兼用できて、部材点数を少なくすることができる。
【００１２】
また、器具本体２への下カバー３、透光性上カバー９の取付け部分が外部との隙間６が１ｍｍ以下の密閉構造であることが好ましい。
【００１３】
このような構成とすることで、内部に虫が侵入しない防虫構造にできるものである。
【００１４】
また、天井５に下面に引掛けシーリングローゼットのコンセント２５を備え且つ外周部に係止突部１４を備えた配線部品１２を設け、器具本体２の中央部の密着部１３に上下に開口する取付け用開口部２３を設けると共に該取付け用開口部２３の内面に採光用開口部８内に突出する方向のばね力が付与された出没自在な係止部材１５を設け、取付け用開口部２３を配線部品１２に嵌め込むと共に係止部材１５を係止突部１４に係止して器具本体２を配線部品１２に取付け、配線部品１２に設けたコンセント２５に器具本体２に備えた引掛けシーリングローゼットのプラグ２２を着脱自在に接続することが好ましい。
【００１５】
このような構成とすることで、器具本体２をねじ具などを用いることなく、係止により簡単に取付けることができ、また、器具本体２への天井５の配線部品１２との電気的接続も容易に行える。
【００１６】
また、放電灯１が環状をしており、この環状をした放電灯１の内側に点灯回路１６、点灯回路１６を制御するための制御部１７を配置することが好ましい。
【００１７】
このような構成とすることで、環状をした放電灯１の上方に点灯回路１６、制御部１７を配置すると上下方向の厚みが厚くなり、しかも、放電灯１から上方に向かう光の一部を遮光して透光性上カバー９を透過する光の光量がすくなくなってしまうが、このようなおそれが防止できる。
【００１８】
また、点灯回路１６の下部に制御部１７を配置した一体構造とし、制御部１７に常夜灯を構成するＬＥＤ１９を付設していることが好ましい。
【００１９】
このような構成とすることで、点灯回路１６、リモコン受光部のような制御部１７を一体物として全体をコンパクトにし、しかも、常夜灯を構成するＬＥＤ１９を制御部１７に設けることで、常夜灯を設けるものであるにもかかわらずＬＥＤ１９により薄くできて、いっそうのコンパクト化、薄型化が図れることになる。
【００２０】
また、放電灯１が環状をしており、器具本体２に環状をした放電灯１を支持するための放電灯支持ばね２０とランプソケット２１とを器具本体２の直径方向に位置変更自在に取付けることが好ましい。
【００２１】
このような構成とすることで、環状をした放電灯１の径の異なるものに対応することができる。
【００２２】
また、器具本体２の中央部の密着部１３の外周形状を平面視円形状とし、器具本体２の密着部１３の周囲の非密着部７を外周側が下となるよう段状に形成し、段状をした非密着部７の内周側である上段部７ａの外周形状を平面視略小判形状とし、段状をした非密着部７の外周側である下段部７ｂの外周形状を平面視円形状とし、外周形状が平面視略小判形状をした非密着部７の上段部７ａに点灯回路１６、制御部１７を取付け、非密着部７の下段部７ｂに採光用開口部８を設け、該採光用開口部８を透光性上カバー９で覆ってあることが好ましい。
【００２３】
このような構成とすることで、最小限のスペースに点灯回路１６、制御部１７を合理的に配置しながら非密着部７と天井５との間の隙間６のうち外観から見える部分の隙間６をできるだけ広くとり、この隙間６が前述のように光ることによって宙に浮いているような外観にできる。
【００２４】
また、透光性上カバー９にプリズム加工が施されていることが好ましい。
【００２５】
このような構成とすることで、透光性上カバー９を上方に透過する光を外側に向けて配向することができて間接照明効果を上げることができる。
【００２６】
また、平面視において器具本体２の中央部の密着部が器具本体２の面積の５０％以下で、照明器具４サイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×３５０ｍｍ、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）で、非密着部７と天井５との隙間６寸法が３０〜７０ｍｍであることが好ましい。
【００２７】
このような構成とすることで、透光性上カバー９を上方に透過する光で効果的な間接照明効果が得られて天井５から天井直付け型照明器具４が浮かんでいるような軽快なイメージを与え、また、透光性上カバー９を通過した上方配光が天井５に局部的な高い輝度の部分をつくることない構造にできる。
【００２８】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【００２９】
本発明の天井直付け型照明器具４は、放電灯１を装備する器具本体２と、器具本体２の下側に着脱自在に取付ける透光性の下カバー３と、器具本体２の上側に着脱自在に取付ける透光性上カバー９とで構成してある。
【００３０】
器具本体２は金属板により形成してあり、図１乃至図６に示すように、器具本体２の中央部が天井５に密着する密着部１３となると共に周囲が天井５と密着することなく天井５との間に隙間６を形成するようにした非密着部７となっている。
【００３１】
器具本体２の中央部には図３、図６に示すように上下に開口する取付け用開口部２３を設けてある。器具本体２内には取付け用開口部２３内に向けて出没自在な係止部材１５が設けてあり、この係止部材１５にはばね材２４により係止部材１５を取付け用開口部２３内に突出させる方向のばね力が付与してある。また、係止部材１５には摘みが設けてあってこの摘みは器具本体２の下面側に露出していて下方から指で摘みを操作することでばね材２４に抗して係止部材１５を取付け用開口部２３内に突出しないように引き込ませることができるようになっている。
【００３２】
図３に示すように、器具本体２の中央部の上記密着部１３は外周形状が平面視円形状となっており、上記取付け用開口部２３を囲むように外周形状が平面視円形をした密着部１３が設けてある。この密着部１３は器具本体２を後述のように天井５に設けた配線部品１２に取付けて接続した状態で上面部が天井５にばね４５のばね力により弾接して密着するようになっている。
【００３３】
器具本体２の上記密着部１３を設けた部分の周囲は図１、図３乃至図６に示すように非密着部７となっており、この非密着部７は外周側が下となるよう段状（２段）に形成してあり、この段状をした非密着部７の内周側である上段部７ａの外周形状が平面視略小判形状となっており、段状をした非密着部７の外周側である下段部７ｂの外周形状が平面視円形状となっている。
【００３４】
非密着部７の下段部７ｂの下面側には環状の放電灯１を支持するための放電灯支持ばね２０とランプソケット２１とが取付けてある。具体的な取付け構造については後述する。放電灯支持ばね２０に環状をした放電灯１を支持させ、放電灯１の接続ピンをランプソケット２１に接続することで器具本体２に環状の放電灯１を取付けるようになっている。
【００３５】
また、非密着部７の下段部７ｂには図２に示すように複数の採光用開口部８が環状に並ぶように形成してある。この環状に並んだ複数の採光用開口部８は器具本体２の下面側に上記のようにして環状の放電灯１を取付けた状態で略上方位置となる部分に形成してある。この非密着部７の下段部７ｂの上面には図１、図３、図４に示すように、ドーナツ状をした透光性上カバー９が着脱自在に載置してあって、この透光性上カバー９により上記環状に並んで形成された複数の採光用開口部８が覆ってある。
【００３６】
透光性上カバー９はねじ具１０により器具本体２に着脱自在に取付けられるのであるが、この場合、透光性上カバー９を器具本体２に取付けるための上記ねじ具１０を利用して図７のように器具本体２の下面側に下カバー受け１１を取付けている。つまり、上記透光性上カバー９を器具本体２に取付けるねじ具１０と、器具本体２に下カバー受け１１を取付けるねじ具１０とが共通のねじ具１０で兼用してある。透光性上カバー９が器具本体２に対して取付け部分から虫が侵入しないように密閉的に取付けてある。ここで、透光性上カバー９の下面部にはプリズム形状をしたプリズム形状部９ａが形成してあり、プリズム形状部９ａの周囲にリブ９ｂが突設してあり、透光性上カバー９を非密着部７の下段部７ｂに載置した状態でプリズム形状部９ａ、リブ９ｂ部分が採光用開口部８に嵌り込んでいる。なお、図８に示すリブ９ｂと採光用開口部８の縁との間の隙間Ｓ１も１ｍｍ以下としてもよい。
【００３７】
器具本体２には環状をした放電灯１の内側に安定器のような点灯回路１６、該点灯回路１６を制御するためのリモコン受光部のような制御部１７を配置して取付けてある。具体的には図１、図２に示すように、外周形状が平面視略小判形状をした上段部７ａの突出部２６部分に点灯回路１６、制御部１７が取付けてある。なお、点灯回路１６、制御部１７は上段部７ａの下面側に位置するだけでなく一部は器具本体２の密着部１３を上方に突設した部分の下面側に位置している。
【００３８】
ここで、点灯回路１６の下部にリモコン受光部のような制御部１７を配置した一体構造の電装品ブロックとなっており、更に制御部１７に常夜灯を構成するＬＥＤ１９を付設してある。このように点灯回路１６、リモコン受光部と常夜灯を付設した制御部１７を上下に積層した一体物として全体をコンパクトにし、しかも、常夜灯を制御部１７に付設したものであるにもかかわらず、常夜灯をＬＥＤ１９とすることで、いっそうのコンパクト化、薄型化が図れるようにしてあり、これにより環状をした放電灯１の内側において外周形状が平面視略小判形状をした上段部７ａの突出部２６部分に点灯回路１６、制御部１７を配置して取付けることができる。
【００３９】
天井５には図６に示すように、下面に引掛けシーリングローゼットのコンセント２５を備え且つ外周部に係止突部１４を備えた配線部品１２を設けてある。
【００４０】
前述の構造の放電灯１を備え且つ上面部に透光性上カバー９を着脱自在に取付けた器具本体２は中央部の密着部１３に設けた取付け用開口部２３を配線部品１２に嵌め込むと共に係止部材１５を係止突部１４に係止して器具本体２を配線部品１２に取付けると共に密着部１３を天井５の下面に密着させ、更に配線部品１２に設けたコンセント２５に器具本体２に備えた引掛けシーリングローゼットのプラグ２２を着脱自在に接続することで天井５に直付けする。
【００４１】
器具本体２の下面側にはグローブと称される透光性を有する下カバー３が取付けられる。下カバー３の上部には内周方向に向けて突出した外側上片部２７が一体に設けてありこの外側上片部２７の突出先端部に囲まれた部分が環状をした開口２８となっており、外側上片部２７の突出先端部の周方向の複数箇所に部分的に取付け用突部２９が突設してある。
【００４２】
前述の器具本体２に取付けた下カバー受け１１には外側方に向けて載置部１１ａが設けてある。
【００４３】
そして、下カバー３を器具本体２の下面側に配置すると共に取付け用突部２９が下カバー受け１１と上下方向に一致しないようにし、この状態で下カバー３を上方に押し上げて下カバー３の外側上片部２７の突出最先端の上横片２７ａを器具本体２の下段部７ｂに押し当て、この状態で下カバー３を平面視で回動して取付け用突部２９をカバー受け１１の載置部１１ａに載置することで下カバー３を器具本体２の下面側に取付ける。この場合、上横片２７ａと器具本体２の下段部７ｂとの間の隙間Ｓ３が１ｍｍ以下となるように設定してあって、下カバー３が取付け部分から虫が侵入しないように器具本体２に対して密閉的に取付けてある。
【００４４】
次に、非密着部７の下段部７ｂの下面側に放電灯支持ばね２０とランプソケット２１とを取付ける例につき説明する。放電灯支持ばね２０とランプソケット２１とはいずれも器具本体２の直径方向に位置変更自在に取付けてある。
【００４５】
器具本体２の非密着部７の下段部７ｂには図１０、図１１に示すようにソケットカバー３０が取付けてあり、このソケットカバー３０は図１２に示すようなもので下面板部３１に長孔３２が形成してあり、この長孔３２は器具本体２の直径方向に長くなっている（ソケットカバー３０と器具本体２の中心とを結ぶ仮想線に沿って長くなっている）。下面板部３１の長孔３２の側部には器具本体２の直径方向に複数箇所（図１０乃至図１２においては２箇所の例が示してある）の係止孔３３が設けてある。ランプソケット２１は図１３に示すようなもので、ソケット本体２１ａの下面の片側から嵌め込み突部２１ｂを突設し、嵌め込み突部２１ｂの下面両側に対向するように一対の保持ばね２１ｃを突設すると共に嵌め込み突部２１ｂの下面中央からソケット部２１ｄを突設してある。嵌め込み突部２１ｂには図１４に示すような枠形状をしたソケット可動板３４が被嵌してあり、このソケット可動板３４の一辺部には先端が自由端となった山形形状をした弾性を有する係止爪３４ａが設けてある。
【００４６】
ランプソケット２１はソケット本体２１ａをソケットカバー３０内に嵌め込むと共に嵌め込み突部２１ｂをソケットカバー３０の下面板部３１の長孔３２に嵌挿してソケット部２１ｄを下面板部３１より下方に突出させることでソケットカバー３０に取付けてある。そして、ランプソケット２１は嵌め込み突部２１ｂを長孔３２に沿って移動することで器具本体２の直径方向に移動自在となっている。ここで、嵌め込み突部２１ｂに被嵌したソケット可動板３４はソケット本体２１ａとソケットカバー３０の下面板部３１の内面（上面）との間に挟まれており、係止爪３４ａを器具本体２の直径方向に複数箇所設けた係止孔３３のうち任意の係止孔３３に挿入係止してあって、ソケットカバー３０に対してランプソケット２１が移動できないように保持している。係止爪３４ａの係止孔３３への係止を解除してソケットカバー３０に対してランプソケット２１を器具本体２の直径方向に移動させ、図１０、図１１に示すように別の係止孔３３に係止爪３４ａを係止することで、直径の異なる複数種類の環状の放電灯１に対応する位置にランプソケット２１を移動して保持させることができる。図１０は直径の大きい環状の放電灯１の場合を示し、図１１は直径の小さい環状の放電灯１の場合を示す。
【００４７】
このようなランプソケット２１にはソケット部２１ｄに放電灯１の接続ピンを接続すると共に上記一対の保持ばね２１ｃにより放電灯１を保持するものである。
【００４８】
また、器具本体２の非密着部７の下段部７ｂには図１５に示すように下方に凹曲した凹部３５が設けてあり、この凹部３５は器具本体２の直径方向に細長い凹みとなっている。凹部３５の底部には器具本体２の直径方向に長い長孔３６が設けてある。また、凹部３５の底部には器具本体２の直径方向に複数の係合孔３７が設けてある。細長い凹みとなった凹部３５内には図１７に示すような可動ブロック３８が器具本体２の直径方向に移動自在に嵌め込んであり、凹部３５の上開口を器具本体２に取付けた蓋３９により遮蔽してある。長孔３６内に放電灯支持ばね２０の上端部を位置させて可動ブロック３８にねじ４０により固着してある。可動ブロック３８には両側に弾性を有する腕部３８ａが設けてあり、該腕３８ａの先端部に係合部３８ｂが設けてあり、該係合部３８ｂを器具本体２の直径方向に複数設けた係合孔３７のうち任意の位置の係合孔３７に係合自在となっている。ここで、少し力を入れて放電灯支持ばね２０を長孔３６に沿って移動すると、係合部３８ｂが係合孔３７から外れるので、この状態で更に移動して他の係合孔３７に係合部３８ｂを係合することで、直径の異なる複数種類の環状の放電灯１に対応する位置に放電灯支持ばね２０を移動して保持させることができる。図１５は直径の大きい環状の放電灯１を放電灯支持ばね２０で支持している場合を示し、図１６は直径の小さい環状の放電灯１を放電灯支持ばね２０で支持している場合を示す。放電灯支持ばね２０には環状の放電灯１が図１５（ａ）図１６のように支持される。
【００４９】
上記ランプソケット２１、複数の凹部３５はそれぞれ図２に示すように非密着部７の下段部７ｂに環状に並ぶように設けた採光用開口部８と採光用開口部８との間に設けてあり、ランプソケット２１や電灯支持ばね２０の取付け部分に邪魔されることなく放電灯１からの光が採光用開口部８を通過できるように構成してある。
【００５０】
上記のような天井直付け型照明器具４は放電灯１を点灯することで、下カバー３を透過して下方を直接照明するものであり、同時に放電灯１から上方に出た光は採光用開口部８から透光性上カバー９を透過して器具本体２の非密着部７と天井５との間の隙間６を明るく照らすと共に隙間６の周囲の外方の天井５下面付近を照らして間接照明をすものである。
【００５１】
下カバー３を取付けた天井直付け型照明器具４の器具本体２は下から見上げた場合、図４の線Ａより下側（イ側）が見えない部分、上側（ロ側）が見える部分となるのであるが、非密着部７と天井５との間に隙間６を設けているので、この部分を下から見ると隙間６だけが見えてほとんど器具本体２が見えないものである。そして、この器具本体２が下から見えないような構成としたものにおいて、上記のように器具本体２の非密着部７と天井５との間の隙間６及びその外周の天井５下面付近が明るく光るのであるが、非密着部７と天井５との間の隙間６があるため、この隙間６が光って該光る部分が宙に浮かんでいるように見えることになる。つまり、本発明においては天井直付け型照明器具４の周囲の天井５付近を単に間接照明するだけでなく、天井直付け型照明器具４と天井５との間の隙間６が光ってこの部分が宙に浮いて見えるような照明効果を現出することができるものである。
【００５２】
ここで、非密着部７の上段部７ａは外周形状が平面視略小判形状をし、この上段部７ａに点灯回路１６、制御部１７を取付けてあるので、略小判形状の突出部分に点灯回路１６、制御部１７を取付けることで、できるだけ器具本体２が隙間６内における下から見えないようにしており、これにより光る隙間６をできるだけ広くとることができ、この広くとった隙間６が前述のように光ることによって宙に浮いているような外観をより効果的に現出できる。
【００５３】
また、透光性上カバー９にプリズム形状をしたプリズム形状部９ａが形成してあることで、透光性上カバー９を上方に透過する光を外側に向けて配向することができて間接照明効果を上げることができる。
【００５４】
ところで、本発明においては、前述の非密着部７と天井５との間の隙間６に向けて光を透過させるための採光用開口部８を覆う透光性上カバー９が非密着部７に対して着脱自在となっているので、透光性上カバー９を交換することで間接光色や間接光の配色を自由に選択することができるものである。透光性上カバー９を交換するには下カバー３を平面視で回動して取付け用突部２９をカバー受け１１から外して取り外し、次に、係止部材１５の摘みを指先で摘んで外側方に移動することで係止部材１５を配線部品１２の係止突部１４から外し、配線部品１２に設けたコンセントから器具本体２に備えた引掛けシーリングローゼットのプラグ２２を外し、このようにして器具本体２を取り外した状態で、ねじ具１０を外してドーナツ状をした透光性上カバー９を取り外し、色やプリズム形状部９ａの形状の異なるものあるいはプリズム形状部９ａを備えないもの等、他の種類の透光性上カバー９と交換して再びねじ具１０で取付け、器具本体２を配線部品１２に取付け、器具本体２に下カバー３を取付けることで、放電灯１からの上方に向かって透光性上カバー９を透過する光の色や配光を変えることができるものである。
【００５５】
これにより、天井直付け型照明器具４取付け後に、居住者自身により簡単に間接光色や配光を変えて室内における照明の雰囲気を変えることができる。
【００５６】
図１８には下カバー３の周囲に透光性枠４１を配設した例であり、このように下カバー３の周囲に透光性枠４１を配設することで、上方への光が天井５面に反射して透光性枠４１を上部から照らすことで従来よりも軽快なイメージの照明ができることになる。
【００５７】
なお、上記実施形態では天井直付け型照明器具４として平面視で円形のものの例を示したが、平面視正方形又は長方形であってもよい。ここで、平面視円形の天井直付け型照明器具４は平面視でφ３５０〜９００ｍｍのものであり、又は平面視正方形のものは３５０×３５０ｍｍ（つまり３５０ｍｍ角）〜９００×９００ｍｍ（つまり９００ｍｍ角）、又は平面視長方形のものは（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）のものである。
【００５８】
上記のように、天井直付け型照明器具４のサイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０×３５０ｍｍ〜９００×９００ｍｍ角、又は平面視で（１００〜４００ｍｍ）×（５００〜１８００ｍｍ）のものの場合、下カバー３を取付けた天井直付け型照明器具４を下から見上げた場合に器具本体２の大部分が見えず、且つ、器具本体２の非密着部７と天井５との間の隙間６が光って該光る部分が宙に浮いているように見えるようにするには、平面視において器具本体２の中央部の密着部１３が器具本体２の面積の５０％以下で、非密着部７と天井５との隙間６の寸法が３０〜７０ｍｍにするとよい。これにより透光性上カバー９を上方に透過する光で効果的な間接照明効果が得られて天井５から天井直付け型照明器具４が浮かんでいるような軽快なイメージを与え、また、透光性上カバー９を通過した上方配光が天井５に局部的な高い輝度の部分をつくることない構造にできるものである。
【００５９】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、放電灯を備えた器具本体の下方に透光性の下カバーを取付けた天井直付け型照明器具であって、器具本体の中央部が天井に密着する密着部となると共に周囲が天井と密着することなく天井との間に隙間を形成するようにした非密着部となり、上記非密着部の放電灯の上方位置に採光用開口部を設け、非密着部上に採光用開口部を覆う透光性上カバーを着脱自在に配設してあるので、放電灯の光が透光性の下カバーを透過して下方を直接照明するのに加え、天井直付け型照明器具において器具本体の非密着部と天井との間の隙間に放電灯からの光が透光性上カバーを透過して隙間が光ると共に天井直付け型照明器具の周囲の天井下面付近を照らして下から見ると上記隙間が光って天井直付け型照明器具が浮いているように見える間接照明がなされるものであり、しかも、上記透光性上カバーが着脱自在であるため、透光性上カバーを交換することで間接光色や間接光の配光を簡単に変更して照明のイメージを簡単に変更することができるものである。
【００６０】
また、請求項２記載の発明にあっては、上記請求項１記載の発明の効果に加えて、透光性上カバーを器具本体にねじ具により取付け、器具本体に下カバーを支持するための下カバー受けをねじ具により取付け、上記透光性カバーを器具本体に取付けるねじ具と、器具本体に下カバー受けを取付けるねじ具とが共通のねじ具で兼用しているので、器具本体に透光性上カバーを着脱自在に取付けるためのねじ具を器具本体に下カバー受けを取付けるためのねじ具と兼用できて、部材点数を少なくできて、コストを低減できるものである。
【００６１】
また、請求項３記載の発明にあっては、上記請求項１又は請求項２記載の発明の効果に加えて、器具本体への下カバー、透光性上カバーの取付け部分が外部との隙間が１ｍｍ以下の密閉構造であるので、内部に虫が侵入しない防虫構造にできるものである。
【００６２】
また、請求項４記載の発明にあっては、上記請求項１乃至請求項３のいずれかに記載の発明の効果に加えて、天井に下面に引掛けシーリングローゼットのコンセントを備え且つ外周部に係止突部を備えた配線部品を設け、器具本体の中央部の密着部に上下に開口する取付け用開口部を設けると共に該取付け用開口部の内面に取付け用開口部内に突出する方向のばね力が付与された出没自在な係止部材を設け、取付け用開口部を配線部品に嵌め込むと共に係止部材を係止突部に係止して器具本体を配線部品に取付け、配線部品に設けたコンセントに器具本体に備えた引掛けシーリングローゼットのプラグを着脱自在に接続してあるので、器具本体をねじ具などを用いることなく、係止により簡単に取付けることができ、また、器具本体への天井の配線部品との電気的接続も容易に行え、これにより間接光色や間接光の配光を変更するための上カバーの交換が容易に行えるものである。
【００６３】
また、請求項５記載の発明にあっては、上記請求項１乃至請求項４のいずれかに記載の発明の効果に加えて、放電灯が環状をしており、この環状の放電灯の内側に点灯回路、点灯回路を制御するための制御部を配置してあるので、環状をした放電灯の上方に点灯回路、制御部を配置すると上下方向の厚みが厚くなり、しかも、放電灯から上方に向かう光の一部を遮光して透光性上カバーを透過する光の光量がすくなくなってしまうが、このようなおそれが防止できるものである。
【００６４】
また、請求項６記載の発明にあっては、上記請求項５記載の発明の効果に加えて、点灯回路の下部に制御部を配置した一体構造とし、制御部に常夜灯を構成するＬＥＤを付設しているので、点灯回路、制御部を一体物として全体をコンパクトにし、しかも、常夜灯を制御部に付設するものであるにもかかわらず、常夜灯をＬＥＤとすることで、いっそうのコンパクト化、薄型化が図れるものである。
【００６５】
また、請求項７記載の発明にあっては、上記請求項１乃至請求項６のいずれかに記載の発明の効果に加えて、放電灯が環状をしており、器具本体に環状の放電灯を支持するための放電灯支持ばねとランプソケットとを器具本体の直径方向に位置変更自在に取付けているので、環状をした放電灯の径の異なるものに対応することができるものである。
【００６６】
また、請求項８記載の発明にあっては、上記請求項１乃至請求項７のいずれかに記載の発明の効果に加えて、器具本体の中央部の密着部の外周形状を平面視円形状とし、器具本体の密着部の周囲の非密着部を外周側が下となるよう段状に形成し、段状をした非密着部の内周側である上段部の外周形状を平面視略小判形状とし、段状をした非密着部の外周側である下段部の外周形状を平面視円形状とし、外周形状が平面視略小判形状をした非密着部の上段部に点灯回路、制御部を取付け、非密着部の下段部に採光用開口部を設け、該採光用開口部を透光性上カバーで覆ってあるので、最小限のスペースに点灯回路、制御部を合理的に配置しながら非密着部と天井との間の隙間のうち外観から見える部分の隙間をできるだけ広くとり、この隙間が前述のように光ることによって宙に浮いているような外観を効果的に現出できる。
【００６７】
また、請求項９記載の発明にあっては、上記請求項１乃至請求項８のいずれかに記載の発明の効果に加えて、透光性上カバーにプリズム加工が施されているので、透光性上カバーを上方に透過する光を外側に向けて配向することができてより間接照明効果を上げることができる。
【００６８】
また、請求項１０記載の発明にあっては、上記請求項１乃至請求項９のいずれかに記載の発明の効果に加えて、平面視において器具本体の中央部の密着部が器具本体の面積の５０％以下で、照明器具サイズが平面視でφ３５０〜９００ｍｍ、又は平面視で３５０ｍｍ角〜９００ｍｍ角、又は平面視で１００〜４００ｍｍ×５００〜１８００ｍｍで、非密着部と天井との隙間寸法が３０〜７０ｍｍであるので、透光性上カバーを上方に透過する光で効果的な間接照明効果が得られて天井から天井直付け型照明器具が浮かんでいるような軽快なイメージを与え、また、透光性上カバーを通過した上方配光が天井に局部的な高い輝度の部分をつくることない構造にできる。
【図面の簡単な説明】
【図１】本発明の天井直付け型照明器具の取付け状態を示す断面図である。
【図２】同上の下カバーを外した状態の下面図である。
【図３】同上の天井直付け型照明器具の平面図である。
【図４】同上の一部破断した側面図である。
【図５】同上の側面図である。
【図６】同上の天井直付け型照明器具の取付け順序を示す説明図である。
【図７】同上の透光性上パネルの取付け部分の断面図である。
【図８】同上の要部拡大断面図である。
【図９】同上の下カバーの取付け部分の断面図である。
【図１０】同上のランプソケットの取付けを示し、（ａ）は下面図であり、（ｂ）は側面図であり、（ｃ）は正面図である。
【図１１】同上のランプソケットの取付け位置を変更した状態を示し、（ａ）は下面図であり、（ｂ）は側面図である。
【図１２】同上に用いるソケットカバーを示し、（ａ）は下面図であり、（ｂ）は上下逆にした状態の斜視図である。
【図１３】同上に用いるランプソケットを示し、（ａ）は下面図であり、（ｂ）は正面図であり、（ｃ）は側面図である。
【図１４】同上に用いるソケット可動板を示し、（ａ）は下面図であり、（ｂ）は側面図であり、（ｃ）は上下逆にした状態の斜視図である。
【図１５】同上の放電灯支持ばねの取付けを示し、（ａ）は側面断面図であり、（ｂ）は正面断面図であり、（ｃ）は下面図である。
【図１６】同上の放電灯支持ばねの取付け位置を変更した例を示す側面断面図である。
【図１７】同上に用いる可動ブロックを示し、（ａ）は上下逆にした状態の斜視図であり、（ｂ）は下面図であり、（ｃ）は側面図であり、（ｄ）は正面図である。
【図１８】本発明の他の実施形態の側面図である。
【図１９】従来例を示す一部破断した側面図である。
【図２０】同上の取付け順序を示す説明図である。
【符号の説明】
１放電灯
２器具本体
３下カバー
４天井直付け型照明器具
５天井
６隙間
７非密着部
７ａ上段部
７ｂ下段部
８採光用開口部
９透光性上カバー
１０ねじ具
１１下カバー受け
１２配線部品
１３密着部
１４係止突部
１５係止部材
１６点灯回路
１７制御部
１９ＬＥＤ
２０放電灯支持ばね
２１ランプソケット
２２プラグ
２３取付け用開口部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ceiling-mounted lighting fixture.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a lighting fixture directly mounted on a ceiling has a light-transmitting lower cover called a glove attached to a lower side of the fixture main body, and a central portion of the fixture main body is closely attached to the ceiling. (For example, see Patent Document 1)
However, in the above-mentioned conventional example, light only penetrates through the light-transmitting lower cover on the lower surface side of the fixture body to illuminate the lower part of the lighting fixture. That is, there was a gap between the ceiling and the ceiling except for the central part of the appliance body, and the gap between the appliance main body and the ceiling was a dark shadow.
[0003]
As another conventional example, a ceiling-mounted lighting fixture as shown in FIGS. 19 and 20 is also known (see Non-Patent Document 1). In the conventional example shown in FIGS. 19 and 20, the fixture main body 54 is constituted by three members of a mounting bracket 50, an inner main body 51, and an outer main body 53 in which an upper translucent cover 52 is integrally fixed, and attached to the ceiling 5 '. The mounting bracket 50 is mounted on the ceiling 5 ′ so as to surround the wiring component 12, the inner main body 51 is mounted on the mounting bracket 50 by screws 55, and then the outer main body 53 in which the upper translucent cover 52 is fixed to the inner main body 51 is screwed. The light-transmitting lower cover 57 is attached to the fixture body 54 attached to the ceiling 5 'as described above.
[0004]
In the conventional example shown in FIGS. 19 and 20, the light of the discharge lamp 1 ′ having the upper light-transmitting cover 52 on the fixture body 54 is provided on the non-contact portion 58 of the fixture body 54 that is not in close contact with the ceiling 5 ′. The space around the ceiling-mounted lighting device is indirectly illuminated by illuminating the gap 59 between the upper translucent cover 52 and the ceiling 5 ′ by transmitting light.
[0005]
However, in this conventional example, the mounting of the instrument body 54 to the ceiling 5 'requires several mounting operations using the screws 55 and 56 as described above. After mounting on the ceiling 5 ′, since it is mounted with screws 55 and 56, not only can not be easily removed from the ceiling 5 by an amateur but also the upper translucent cover 52 is fixed to the outer body 53 and removed. It cannot be replaced, and once the ceiling-mounted lighting fixture is once mounted on the ceiling 5 ', the indirect light color and light distribution by the upper light-transmitting cover 52 are fixed, and the resident himself makes the upper transparent cover. However, there is a problem that the indirect light color and the light distribution cannot be changed due to the above. Further, the conventional device shown in FIGS. 19 and 20 has a non-sealed structure in which a gap 59 is provided between the lower cover 57 and the device main body 54 at a portion where the device is attached, so that insects can enter and clean the device. And maintenance must be performed frequently.
[0006]
[Patent Document 1]
JP-A-8-31214
[Non-patent document 1]
Matsushita Electric Works Co., Ltd. Lighting Branch Company Lighting Catalog, “LIGHTINGMODE” Expert, 2002, 2003 edition B62-B65
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and it is possible to indirectly illuminate the periphery of a ceiling-mounted lighting fixture with a simple configuration, and to easily change the indirect light color and light distribution around the lighting fixture, It is an object of the present invention to provide a direct-to-ceiling lighting device that can be made to have an insect-proof structure, can achieve maintenance saving, can be made thin, and can cope with annular discharge lamps having different diameters. .
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a ceiling-mounted lighting device according to the present invention is a ceiling-mounted lighting device 4 in which a translucent lower cover 3 is attached below a device main body 2 having a discharge lamp 1. Thus, the central portion of the appliance body 2 becomes a close contact portion 13 which is in close contact with the ceiling 5, and the periphery is a non-contact portion 7 in which a gap 6 is formed between the ceiling 5 and the ceiling 5 without making close contact with the ceiling 5. A lighting opening 8 is provided above the discharge lamp 1 in the non-contact portion 7, and a translucent upper cover 9 covering the lighting opening 8 is detachably provided on the non-contact portion 7. It is a feature.
[0009]
With such a configuration, in addition to the light from the discharge lamp 1 passing through the translucent lower cover 3 to directly illuminate the lower part, the non-contact portion of the fixture body 2 in the ceiling-mounted lighting fixture 4 Light from the discharge lamp 1 passes through the translucent upper cover 9 to illuminate the gap 6 between the ceiling 7 and the ceiling 5 and illuminate the vicinity of the lower surface of the ceiling around the ceiling-mounted lighting fixture 4. When viewed from above, the space 6 is illuminated and indirect illumination is performed so that the ceiling-mounted lighting fixture 4 appears to be floating. In addition, since the light-transmitting upper cover 9 is detachable, light is transmitted. The cover 9 can be easily replaced to easily change the color of indirect light or the distribution of indirect light.
[0010]
Further, the translucent upper cover 9 is attached to the instrument body 2 with the screw 10, the lower cover receiver 11 for supporting the lower cover 3 is attached to the instrument body 2 with the screw 10, and the translucent cover is attached to the instrument body 2. It is preferable that the screw 10 attached to the second screw 2 and the screw 10 to attach the lower cover receiver 11 to the instrument main body 2 are shared by the common screw 10.
[0011]
With such a configuration, the screw 10 for detachably attaching the translucent upper cover 9 to the instrument body 2 can also be used as the screw 10 for attaching the lower cover receiver 11 to the instrument body 2, The number of members can be reduced.
[0012]
Further, it is preferable that a portion where the lower cover 3 and the translucent upper cover 9 are attached to the instrument body 2 has a closed structure in which a gap 6 with the outside is 1 mm or less.
[0013]
With such a configuration, an insect repellent structure in which insects do not enter inside can be obtained.
[0014]
In addition, the ceiling 5 has a wiring part 12 provided with a ceiling ceiling closet outlet 25 on the lower surface and a locking projection 14 on the outer periphery, and a vertically open opening in the close contact portion 13 at the center of the instrument body 2. The mounting opening 23 is provided, and the inner surface of the mounting opening 23 is provided with a retractable locking member 15 to which a spring force in a direction protruding into the lighting opening 8 is provided, and the mounting opening 23 is wired. The tool body 2 is attached to the wiring component 12 by fitting the locking member 15 to the locking projection 14 while being fitted into the component 12, and a hanging ceiling rosette provided on the tool body 2 to an outlet 25 provided in the wiring component 12. It is preferable to connect the plug 22 detachably.
[0015]
With such a configuration, the fixture main body 2 can be easily attached by locking without using a screw or the like, and the electrical connection between the fixture main body 2 and the wiring component 12 of the ceiling 5 can be achieved. Easy to do.
[0016]
Further, it is preferable that the discharge lamp 1 has a ring shape, and that a lighting circuit 16 and a control unit 17 for controlling the lighting circuit 16 be arranged inside the discharge lamp 1 having the ring shape.
[0017]
With such a configuration, when the lighting circuit 16 and the control unit 17 are disposed above the annular discharge lamp 1, the thickness in the up-down direction is increased, and a part of the light traveling upward from the discharge lamp 1 is removed. Although the amount of light that is shielded and transmitted through the translucent upper cover 9 becomes small, such a fear can be prevented.
[0018]
In addition, it is preferable that the control unit 17 be arranged integrally below the lighting circuit 16 and that the control unit 17 be provided with an LED 19 constituting a nightlight.
[0019]
With this configuration, the lighting circuit 16 and the control unit 17 such as a remote control light receiving unit are integrated into one unit to make the whole compact, and an LED 19 constituting a night light is provided in the control unit 17 to provide a night light. Despite this, the thickness can be made thinner by the LED 19, and the size and thickness can be further reduced.
[0020]
Further, the discharge lamp 1 has an annular shape, and a discharge lamp supporting spring 20 for supporting the annular discharge lamp 1 on the appliance body 2 and a lamp socket 21 are mounted so as to be freely displaceable in the diameter direction of the appliance body 2. Is preferred.
[0021]
With such a configuration, it is possible to cope with annular discharge lamps 1 having different diameters.
[0022]
In addition, the outer peripheral shape of the contact portion 13 at the center of the appliance main body 2 is circular in a plan view, and the non-adhesive portion 7 around the adherent portion 13 of the appliance main body 2 is formed stepwise so that the outer peripheral side is downward. The outer shape of the upper portion 7a, which is the inner side of the non-adhesive portion 7 having a shape, is substantially oval in plan view, and the outer shape of the lower portion 7b, which is the outer side of the non-adhesive portion 7 in a plan view, is a circle in plan view. The lighting circuit 16 and the control unit 17 are attached to the upper part 7a of the non-contact part 7 whose outer peripheral shape is substantially oval in plan view, and a lighting opening 8 is provided in the lower part 7b of the non-contact part 7. It is preferable that the daylighting opening 8 is covered with a translucent upper cover 9.
[0023]
With such a configuration, the lighting circuit 16 and the control unit 17 are rationally arranged in a minimum space, and the gap 6 between the non-adhesive part 7 and the ceiling 5 that is visible from the exterior is formed. Is made as large as possible, and the gap 6 can be made to look like floating in the air by shining as described above.
[0024]
Further, it is preferable that the translucent upper cover 9 is subjected to prism processing.
[0025]
With such a configuration, the light transmitted upward through the translucent upper cover 9 can be directed outward, and the indirect lighting effect can be enhanced.
[0026]
In plan view, the central portion of the fixture body 2 has a contact portion of 50% or less of the area of the fixture body 2, and the size of the lighting fixture 4 is φ350 to 900 mm in plan view, or 350 × 350 mm to 900 × 350 mm in plan view. Alternatively, it is preferable that the size of the gap 6 between the non-contact portion 7 and the ceiling 5 is 30 to 70 mm in a plan view (100 to 400 mm) × (500 to 1800 mm).
[0027]
With such a configuration, an effective indirect lighting effect is obtained with light that passes upward through the translucent upper cover 9, and the lightness is such that the ceiling-mounted lighting fixture 4 is floating from the ceiling 5. An image can be provided, and a structure can be provided in which the upper light distribution passing through the translucent upper cover 9 does not create a locally high-luminance portion on the ceiling 5.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0029]
The ceiling-mounted lighting fixture 4 of the present invention includes a fixture main body 2 equipped with a discharge lamp 1, a translucent lower cover 3 detachably attached to a lower side of the fixture main body 2, and a detachable upper cover 3 for the fixture main body 2. It comprises a light-transmitting upper cover 9 which can be freely attached.
[0030]
The appliance main body 2 is formed of a metal plate, and as shown in FIGS. 1 to 6, the central portion of the appliance main body 2 serves as a contact portion 13 that adheres to the ceiling 5, and the periphery does not adhere to the ceiling 5. 5 is a non-contact portion 7 in which a gap 6 is formed.
[0031]
At the center of the instrument main body 2, a mounting opening 23 that opens vertically is provided as shown in FIGS. A locking member 15 is provided in the instrument main body 2 so as to be able to protrude and retract into the mounting opening 23. The locking member 15 is inserted into the mounting opening 23 by a spring material 24. A spring force in the direction of projecting is applied. Further, the locking member 15 is provided with a knob, and the knob is exposed on the lower surface side of the instrument main body 2. By operating the knob with a finger from below, the locking member 15 is opposed to the spring material 24. It can be pulled in so as not to protrude into the mounting opening 23.
[0032]
As shown in FIG. 3, the contact portion 13 at the center of the instrument body 2 has a circular outer peripheral shape in plan view, and has a circular outer peripheral shape in plan view so as to surround the mounting opening 23. A part 13 is provided. The contact portion 13 is configured such that an upper surface portion thereof elastically contacts the ceiling 5 by the spring force of the spring 45 in a state where the instrument body 2 is attached to and connected to the wiring component 12 provided on the ceiling 5 as described later. .
[0033]
As shown in FIGS. 1, 3 to 6, a non-contact portion 7 is formed around the portion of the instrument body 2 where the contact portion 13 is provided, and the non-contact portion 7 is stepped so that the outer peripheral side is downward. The outer shape of the upper step portion 7a, which is the inner peripheral side of the stepped non-adhesive portion 7, has a substantially oval shape in plan view. The outer peripheral shape of the lower step portion 7b, which is the outer peripheral side, is circular in plan view.
[0034]
A discharge lamp support spring 20 for supporting the annular discharge lamp 1 and a lamp socket 21 are attached to the lower surface side of the lower portion 7b of the non-contact portion 7. A specific mounting structure will be described later. The annular discharge lamp 1 is supported by the discharge lamp support spring 20, and the connection pin of the discharge lamp 1 is connected to the lamp socket 21 so that the annular discharge lamp 1 is attached to the appliance body 2.
[0035]
In addition, a plurality of lighting openings 8 are formed in the lower portion 7b of the non-contact portion 7, as shown in FIG. The plurality of lighting openings 8 arranged in an annular shape are formed in a portion which is located substantially above the state where the annular discharge lamp 1 is mounted on the lower surface side of the appliance body 2 as described above. As shown in FIGS. 1, 3, and 4, a doughnut-shaped light-transmitting upper cover 9 is detachably mounted on the upper surface of the lower portion 7b of the non-contact portion 7. A plurality of lighting openings 8 formed side by side in the above annular shape are covered by an upper cover 9.
[0036]
The translucent upper cover 9 is detachably attached to the instrument main body 2 with the screw 10. In this case, the above-mentioned screw 10 for attaching the translucent upper cover 9 to the instrument main body 2 is used. 7, the lower cover receiver 11 is attached to the lower surface side of the instrument body 2. That is, the screw 10 for attaching the translucent upper cover 9 to the instrument body 2 and the screw 10 for attaching the lower cover receiver 11 to the instrument body 2 are shared by the common screw 10. A translucent upper cover 9 is hermetically attached to the instrument body 2 so that insects do not enter from the attachment portion. Here, a prism-shaped portion 9a having a prism shape is formed on the lower surface of the light-transmitting upper cover 9, and a rib 9b is protruded around the prism-shaped portion 9a. The prism-shaped portion 9a and the rib 9b are fitted into the light-receiving opening 8 in a state where is mounted on the lower step 7b of the non-contact portion 7. The gap S1 between the rib 9b shown in FIG. 8 and the edge of the daylighting opening 8 may be 1 mm or less.
[0037]
A lighting circuit 16 such as a ballast and a control unit 17 such as a remote control light receiving unit for controlling the lighting circuit 16 are arranged and attached to the inside of the annular discharge lamp 1 in the appliance body 2. Specifically, as shown in FIGS. 1 and 2, the lighting circuit 16 and the control unit 17 are attached to the protruding portion 26 of the upper portion 7 a having a substantially oval outer peripheral shape in plan view. Note that the lighting circuit 16 and the control unit 17 are not only located on the lower surface side of the upper section 7a, but also partially located on the lower surface side of the portion where the contact portion 13 of the appliance main body 2 protrudes upward.
[0038]
Here, an electric component block having an integrated structure in which a control unit 17 such as a remote control light receiving unit is arranged below the lighting circuit 16 is further provided with an LED 19 constituting a nightlight. As described above, the lighting circuit 16, the remote control light receiving unit, and the control unit 17 provided with the night light are stacked on top of one another to make the whole compact, and in addition to the night light provided in the control unit 17, the night light is provided. Is made to be an LED 19, so that further compactness and thinning can be achieved, whereby the projection 26 portion of the upper step portion 7a whose outer peripheral shape is substantially oval in plan view inside the annular discharge lamp 1 is formed. The lighting circuit 16 and the control unit 17 can be arranged and mounted on the vehicle.
[0039]
As shown in FIG. 6, the ceiling 5 is provided with a wiring component 12 having a socket 25 of a hanging ceiling closet on a lower surface and a locking projection 14 on an outer peripheral portion.
[0040]
The appliance main body 2 having the discharge lamp 1 having the above-described structure and having the translucent upper cover 9 removably attached to the upper surface thereof is fitted with the mounting opening 23 provided in the central contact portion 13 into the wiring component 12. At the same time, the locking member 15 is locked to the locking projection 14 to attach the appliance body 2 to the wiring component 12, the contact portion 13 is brought into close contact with the lower surface of the ceiling 5, and the appliance body is connected to an outlet 25 provided on the wiring component 12. The plug 22 of the hanging ceiling rosette provided in 2 is detachably connected to be directly attached to the ceiling 5.
[0041]
A lower cover 3 having a light-transmitting property called a glove is attached to the lower surface side of the device main body 2. An outer upper piece 27 protruding toward the inner circumferential direction is provided integrally with the upper part of the lower cover 3, and a portion surrounded by the protruding tip of the outer upper piece 27 is an annular opening 28. In addition, mounting projections 29 are partially provided at a plurality of locations in the circumferential direction of the projecting distal end of the outer upper piece 27.
[0042]
The lower cover receiver 11 attached to the device main body 2 has a mounting portion 11a facing outward.
[0043]
Then, the lower cover 3 is arranged on the lower surface side of the instrument main body 2 and the mounting projection 29 does not coincide with the lower cover receiver 11 in the up-down direction. In this state, the lower cover 3 is pushed upward to remove the lower cover 3. The outermost upper piece 27a of the outer upper piece 27 is pressed against the lower step 7b of the instrument body 2, and in this state, the lower cover 3 is rotated in a plan view to attach the mounting projection 29 to the cover receiver 11. The lower cover 3 is attached to the lower surface side of the instrument body 2 by being placed on the placement section 11a. In this case, the gap S3 between the upper horizontal piece 27a and the lower step 7b of the instrument main body 2 is set to be 1 mm or less, and the lower cover 3 prevents the insect main body 2 from entering from the mounting portion. It is hermetically attached to
[0044]
Next, an example in which the discharge lamp supporting spring 20 and the lamp socket 21 are mounted on the lower surface side of the lower portion 7b of the non-contact portion 7 will be described. The discharge lamp support spring 20 and the lamp socket 21 are both mounted so that their positions can be changed in the diametrical direction of the appliance body 2.
[0045]
As shown in FIGS. 10 and 11, a socket cover 30 is attached to the lower portion 7b of the non-contact portion 7 of the appliance body 2, and the socket cover 30 is as shown in FIG. A hole 32 is formed, and the long hole 32 is elongated in the diameter direction of the appliance main body 2 (extended along an imaginary line connecting the socket cover 30 and the center of the appliance main body 2). A plurality of locking holes 33 (two examples are shown in FIGS. 10 to 12) are provided on the side of the elongated hole 32 of the lower surface plate portion 31 in the diameter direction of the instrument body 2. As shown in FIG. 13, the lamp socket 21 has a fitting projection 21b protruding from one side of the lower surface of the socket body 21a, and a pair of holding springs 21c projecting from both sides of the lower surface of the fitting projection 21b. At the same time, a socket portion 21d is projected from the center of the lower surface of the fitting projection 21b. A socket movable plate 34 having a frame shape as shown in FIG. 14 is fitted to the fitting projection 21b. One side of the socket movable plate 34 has a mountain-shaped elasticity with a free end at the tip. Locking claw 34a is provided.
[0046]
In the lamp socket 21, the socket main body 21a is fitted into the socket cover 30, and the fitting projection 21b is fitted into the long hole 32 of the lower surface plate portion 31 of the socket cover 30 so that the socket portion 21d projects below the lower surface plate portion 31. Thus, it is attached to the socket cover 30. The lamp socket 21 is movable in the diameter direction of the appliance body 2 by moving the fitting projection 21b along the elongated hole 32. Here, the socket movable plate 34 fitted to the fitting projection 21b is sandwiched between the socket main body 21a and the inner surface (upper surface) of the lower surface plate portion 31 of the socket cover 30. Of the plurality of locking holes 33 provided in the diametrical direction, and is inserted and locked in any one of the locking holes 33 to hold the lamp socket 21 so as not to move with respect to the socket cover 30. The locking of the locking claw 34a into the locking hole 33 is released, and the lamp socket 21 is moved relative to the socket cover 30 in the diametrical direction of the appliance body 2, and another locking is performed as shown in FIGS. By locking the locking claw 34a in the hole 33, the lamp socket 21 can be moved and held at a position corresponding to a plurality of types of annular discharge lamps 1 having different diameters. FIG. 10 shows the case of the annular discharge lamp 1 having a large diameter, and FIG. 11 shows the case of the annular discharge lamp 1 having a small diameter.
[0047]
In such a lamp socket 21, a connection pin of the discharge lamp 1 is connected to a socket portion 21d, and the discharge lamp 1 is held by the pair of holding springs 21c.
[0048]
As shown in FIG. 15, the lower portion 7 b of the non-contact portion 7 of the appliance body 2 is provided with a concave portion 35 that is concavely bent downward. I have. A long hole 36 long in the diameter direction of the instrument body 2 is provided at the bottom of the concave portion 35. A plurality of engagement holes 37 are provided at the bottom of the recess 35 in the diametrical direction of the instrument body 2. A movable block 38 as shown in FIG. 17 is movably fitted in the elongated concave portion 35 in the diametrical direction of the instrument main body 2, and an upper opening of the concave portion 35 is covered by a lid 39 attached to the instrument main body 2. Shielded. The upper end of the discharge lamp support spring 20 is positioned in the elongated hole 36 and is fixed to the movable block 38 by screws 40. The movable block 38 is provided with arms 38a having elasticity on both sides, an engagement portion 38b is provided at a tip end of the arm 38a, and a plurality of the engagement portions 38b are provided in the diameter direction of the instrument body 2. The engagement hole 37 can be freely engaged with the engagement hole 37 at an arbitrary position. Here, when the discharge lamp supporting spring 20 is moved along the elongated hole 36 with a little force, the engaging portion 38b is disengaged from the engaging hole 37. In this state, the engaging portion 38b is further moved to the other engaging hole 37. By engaging the engaging portion 38b, the discharge lamp supporting spring 20 can be moved and held at a position corresponding to a plurality of types of annular discharge lamps 1 having different diameters. FIG. 15 shows the case where the large-diameter annular discharge lamp 1 is supported by the discharge lamp support spring 20, and FIG. 16 shows the case where the small-diameter annular discharge lamp 1 is supported by the discharge lamp support spring 20. Show. The discharge lamp supporting spring 20 supports the annular discharge lamp 1 as shown in FIG.
[0049]
As shown in FIG. 2, the lamp socket 21 and the plurality of recesses 35 are provided between the lighting openings 8 provided in the lower step 7b of the non-contact portion 7 so as to be annularly arranged. There is a configuration in which light from the discharge lamp 1 can pass through the lighting opening 8 without being obstructed by the mounting portions of the lamp socket 21 and the lamp supporting spring 20.
[0050]
The lighting device 4 directly mounted on the ceiling as described above illuminates the discharge lamp 1 to directly illuminate the lower portion through the lower cover 3 and simultaneously emits light upward from the discharge lamp 1 for lighting. The gap 6 between the non-adhesive part 7 of the appliance main body 2 and the ceiling 5 is illuminated brightly through the transparent upper cover 9 through the opening 8 and the vicinity of the lower surface of the ceiling 5 around the gap 6 is illuminated. It provides indirect lighting.
[0051]
When looking up from below, the main body 2 of the ceiling-mounted lighting fixture 4 to which the lower cover 3 is attached is a part where the lower side (a side) is not visible from the line A in FIG. 4 and a part where the upper side (b side) is visible. However, since the gap 6 is provided between the non-contact portion 7 and the ceiling 5, when viewed from below, only the gap 6 is visible, and the instrument main body 2 is hardly visible. Then, in a configuration in which the appliance body 2 is not visible from below, the gap 6 between the non-contact portion 7 of the appliance body 2 and the ceiling 5 and the vicinity of the lower surface of the ceiling 5 on the outer periphery thereof are bright as described above. Although it shines, since there is a gap 6 between the non-contact portion 7 and the ceiling 5, this gap 6 shines and the shining part appears to be floating in the air. That is, in the present invention, not only the indirect illumination of the vicinity of the ceiling 5 around the ceiling-mounted lighting device 4 but also the gap 6 between the ceiling-mounted lighting device 4 and the ceiling 5 shines, It can produce a lighting effect that appears to float in the air.
[0052]
Here, the upper portion 7a of the non-contact portion 7 has a substantially oval outer peripheral shape in plan view, and the lighting circuit 16 and the control section 17 are attached to the upper portion 7a. 16, by attaching the control unit 17, the appliance main body 2 is prevented from being seen from below in the gap 6 as much as possible, whereby the glowing gap 6 can be made as wide as possible. By shining light, the appearance of floating in the air can more effectively appear.
[0053]
In addition, since the prism-shaped portion 9a having a prism shape is formed on the light-transmitting upper cover 9, light that passes upward through the light-transmitting upper cover 9 can be directed outward and indirect illumination can be performed. The effect can be improved.
[0054]
Incidentally, in the present invention, the light-transmitting upper cover 9 that covers the lighting opening 8 for transmitting light toward the gap 6 between the non-contact portion 7 and the ceiling 5 is attached to the non-contact portion 7. The indirect light color and the color scheme of the indirect light can be freely selected by exchanging the translucent upper cover 9 because it is detachable. To replace the translucent upper cover 9, the lower cover 3 is rotated in plan view, the mounting projection 29 is removed from the cover receiver 11 and removed, and then the locking member 15 is gripped with a fingertip. By moving outward, the locking member 15 is released from the locking projection 14 of the wiring component 12, and the plug 22 of the hooking ceiling closet provided on the appliance body 2 is removed from the outlet provided on the wiring component 12, as described above. With the instrument body 2 removed, the screw 10 is removed and the doughnut-shaped translucent upper cover 9 is removed, and the color or the shape of the prism-shaped portion 9a is different or the prism-shaped portion 9a is not provided. For example, by replacing with a translucent upper cover 9 of another type and attaching with screws 10 again, attaching the instrument body 2 to the wiring component 12 and attaching the lower cover 3 to the instrument body 2, the discharge lamp 1 Going upwards Te is capable of changing the light color and light distribution passing through the translucent upper cover 9.
[0055]
Thus, after the ceiling-mounted lighting fixture 4 is attached, the resident can easily change the indirect light color and light distribution to change the lighting atmosphere in the room.
[0056]
FIG. 18 shows an example in which the light-transmitting frame 41 is provided around the lower cover 3. By arranging the light-transmitting frame 41 around the lower cover 3 in this manner, light upward can be transmitted to the ceiling. By illuminating the translucent frame 41 from above by reflecting on the five surfaces, a lighter image can be illuminated than before.
[0057]
In the above-described embodiment, the example of the ceiling-mounted lighting fixture 4 having a circular shape in a plan view has been described, but may be a square or a rectangle in a plan view. Here, the ceiling-mounted light fixture 4 having a circular shape in a plan view has a diameter of 350 to 900 mm in a plan view, or a 350 × 350 mm (ie, a 350 mm square) to 900 × 900 mm (ie, a 900 mm square) has a square shape in a plan view. Or a rectangular shape in plan view is (100 to 400 mm) × (500 to 1800 mm).
[0058]
As described above, the size of the ceiling-mounted lighting fixture 4 is φ350 to 900 mm in plan view, 350 × 350 mm to 900 × 900 mm square in plan view, or (100 to 400 mm) × (500 to 1800 mm) in plan view. In the case of the above, when the ceiling-mounted lighting fixture 4 to which the lower cover 3 is attached is looked up from below, most of the fixture main body 2 is not visible, and between the non-adhered portion 7 of the fixture main body 2 and the ceiling 5 In order to make the gap 6 shine so that the shining part appears to be floating in the air, the contact portion 13 at the center of the instrument main body 2 in a plan view is 50% or less of the area of the instrument main body 2, and The size of the gap 6 between the contact portion 7 and the ceiling 5 is preferably set to 30 to 70 mm. As a result, an effective indirect lighting effect is obtained by the light transmitted upward through the translucent upper cover 9, giving a light image as if the ceiling-mounted lighting fixture 4 is floating from the ceiling 5. The upper light distribution that has passed through the optical upper cover 9 does not form a locally high-luminance portion on the ceiling 5.
[0059]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is a lighting device directly mounted on a ceiling in which a translucent lower cover is attached below a lighting device equipped with a discharge lamp. The central portion is a close contact portion that is in close contact with the ceiling, and the periphery is a non-contact portion in which a gap is formed between the ceiling and the ceiling without being in close contact with the ceiling. An opening is provided, and a light-transmitting upper cover that covers the lighting opening is detachably provided on the non-contact portion, so that the light of the discharge lamp passes through the light-transmitting lower cover and goes directly downward. In addition to lighting, in a ceiling-mounted lighting fixture, the light from the discharge lamp passes through the translucent upper cover to the gap between the non-adhesive part of the fixture body and the ceiling, the gap shines, and the ceiling-mounted type When viewed from below, illuminating the vicinity of the lower surface of the ceiling around the lighting equipment, the above gap shines and is directly attached to the ceiling Indirect lighting that makes it look like a floating type lighting fixture is floating, and since the above-mentioned translucent upper cover is removable, the indirect light color and indirect light can be changed by replacing the translucent upper cover. The light distribution can be easily changed to easily change the illumination image.
[0060]
According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, a light-transmitting upper cover is attached to the instrument body with a screw, and the lower cover is supported on the instrument body. The lower cover receiver is attached with a screw, and the screw that attaches the translucent cover to the instrument body and the screw that attaches the lower cover receiver to the instrument body are also used as common screws. The screw for detachably attaching the optical upper cover can also be used as the screw for attaching the lower cover receiver to the instrument body, so that the number of members can be reduced and the cost can be reduced.
[0061]
According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, a portion where the lower cover and the translucent upper cover are attached to the instrument body has a gap with the outside. Is a hermetic structure of 1 mm or less, so that an insect repellent structure in which insects do not enter inside can be obtained.
[0062]
Further, in the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, in addition to a ceiling ceiling outlet provided on a lower surface of the ceiling and an outer peripheral portion provided. A wiring component having a locking projection is provided, and a mounting opening is provided in the central portion of the instrument body, the mounting opening being vertically opened, and a spring in a direction protruding into the mounting opening is formed on an inner surface of the mounting opening. Providing a retractable locking member to which force is applied, fitting the mounting opening into the wiring component, locking the locking member to the locking projection, mounting the instrument body to the wiring component, and providing the wiring component Since the plug of the hanging ceiling rosette provided on the instrument body is detachably connected to the outlet, the instrument body can be easily attached by locking without using screws etc., and to the instrument body Ceiling The electrical connection between the wiring parts easy to, thereby in which replacement of the upper cover can be performed easily for changing the light distribution of indirect light color and indirect light.
[0063]
According to a fifth aspect of the present invention, in addition to the effects of the first to fourth aspects of the present invention, the discharge lamp is annular, and the inside of the annular discharge lamp is Since a lighting circuit and a control unit for controlling the lighting circuit are arranged on the discharge lamp, the thickness in the vertical direction increases when the lighting circuit and the control unit are disposed above the ring-shaped discharge lamp, and furthermore, above the discharge lamp. A part of the light traveling toward the upper side is shielded, and the amount of light transmitted through the translucent upper cover becomes small, but such a fear can be prevented.
[0064]
According to the invention of claim 6, in addition to the effect of the invention of claim 5, in addition to the effect of the invention of claim 5, an integrated structure in which a control unit is disposed below the lighting circuit, and an LED that constitutes a nightlight is attached to the control unit. Because the lighting circuit and the control unit are integrated into one unit, the whole unit is compact. In addition, the nightlight is attached to the control unit. Can be achieved.
[0065]
Further, in the invention according to claim 7, in addition to the effect of the invention according to any one of claims 1 to 6, the discharge lamp is annular, and the discharge lamp is annular in the main body of the appliance. Since the discharge lamp supporting spring and the lamp socket for supporting the lamp are mounted so as to be freely displaceable in the diameter direction of the appliance body, it is possible to cope with annular discharge lamps having different diameters.
[0066]
Further, in the invention according to claim 8, in addition to the effect of the invention according to any one of claims 1 to 7, the outer peripheral shape of the contact portion at the center of the appliance body is circular in plan view. The non-contact portion around the contact portion of the appliance body is formed stepwise so that the outer peripheral side is downward, and the outer peripheral shape of the upper step portion which is the inner peripheral side of the stepped non-contact portion is substantially oval in plan view. The outer peripheral shape of the lower part, which is the outer peripheral side of the stepped non-contact part, is circular in plan view, and the lighting circuit and control unit are mounted on the upper part of the non-contact part, the outer peripheral shape of which is approximately oval in plan view. A lighting opening is provided in the lower part of the non-contact portion, and the lighting opening is covered with a light-transmitting upper cover, so that the lighting circuit and the control unit are rationally arranged in the minimum space. Of the gap between the close-contact part and the ceiling, make the gap as large as possible from the external view, Like appearance are floating in the air by glowing as mentioned can be effectively emerges.
[0067]
According to the ninth aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the prismatic processing is performed on the light-transmitting upper cover, the light-transmitting upper cover is provided. The light transmitted upward through the optical upper cover can be directed outward, so that the indirect lighting effect can be further enhanced.
[0068]
Further, in the invention according to claim 10, in addition to the effect of the invention according to any one of claims 1 to 9, in addition to the above, the close contact portion at the center of the instrument main body in plan view has an area of the instrument main body. The lighting fixture size is φ350 to 900 mm in plan view, or 350 mm square to 900 mm square in plan view, or 100 to 400 mm × 500 to 1800 mm in plan view, and the gap size between the non-adhesive part and the ceiling is Since it is 30 to 70 mm, an effective indirect lighting effect is obtained by the light transmitted upward through the translucent upper cover, giving a light image as if the ceiling-mounted lighting fixture is floating from the ceiling, and In addition, a structure can be provided in which the upper light distribution that has passed through the translucent upper cover does not form a locally high-luminance portion on the ceiling.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a mounted state of a direct-mounted ceiling lighting device of the present invention.
FIG. 2 is a bottom view with the lower cover removed therefrom.
FIG. 3 is a plan view of the lighting device directly mounted on a ceiling according to the first embodiment;
FIG. 4 is a partially broken side view of the same.
FIG. 5 is a side view of the same.
FIG. 6 is an explanatory view showing the order of mounting the above-mentioned ceiling-mounted lighting fixture.
FIG. 7 is a sectional view of a mounting portion of the translucent upper panel of the above.
FIG. 8 is an enlarged sectional view of a main part of the above.
FIG. 9 is a cross-sectional view of a mounting portion of the lower cover according to the embodiment.
FIGS. 10A and 10B show how the lamp socket is mounted, wherein FIG. 10A is a bottom view, FIG. 10B is a side view, and FIG. 10C is a front view.
11A and 11B show a state in which the mounting position of the lamp socket is changed, wherein FIG. 11A is a bottom view and FIG. 11B is a side view.
FIGS. 12A and 12B show a socket cover used in the above, wherein FIG. 12A is a bottom view and FIG. 12B is a perspective view of the socket cover turned upside down.
FIGS. 13A and 13B show a lamp socket used in the above, wherein FIG. 13A is a bottom view, FIG. 13B is a front view, and FIG. 13C is a side view.
FIGS. 14A and 14B show the socket movable plate used in the above, wherein FIG. 14A is a bottom view, FIG. 14B is a side view, and FIG.
15A and 15B show the mounting of the discharge lamp supporting spring of the above, wherein FIG. 15A is a side sectional view, FIG. 15B is a front sectional view, and FIG. 15C is a bottom view.
FIG. 16 is a side sectional view showing an example in which the mounting position of the discharge lamp supporting spring is changed.
17A and 17B show a movable block used in the above, wherein FIG. 17A is a perspective view in an upside down state, FIG. 17B is a bottom view, FIG. 17C is a side view, and FIG. FIG.
FIG. 18 is a side view of another embodiment of the present invention.
FIG. 19 is a partially broken side view showing a conventional example.
FIG. 20 is an explanatory view showing an attachment order of the above.
[Explanation of symbols]
1 Discharge lamp
2 Instrument body
3 Lower cover
4 Ceiling-mounted lighting fixtures
5 ceiling
6 gap
7 Non-adhesion part
7a Upper section
7b Lower part
8 Daylighting opening
9 Translucent upper cover
10 Screws
11 Lower cover receiver
12 Wiring components
13 Close contact
14 Locking projection
15 Locking member
16 Lighting circuit
17 Control part
19 LED
20 Discharge lamp support spring
21 lamp socket
22 plug
23 Mounting opening

Claims

A lighting device directly mounted on a ceiling in which a translucent lower cover is attached below a device main body equipped with a discharge lamp, wherein a central portion of the device main body becomes a close contact portion that closely adheres to the ceiling, and a periphery closely adheres to the ceiling. A light-transmitting opening that is provided at a position above the discharge lamp at the non-contact portion so as to form a gap between the ceiling and the ceiling without the light-receiving portion, and covers the light-receiving opening over the non-contact portion. A lighting device directly mounted on a ceiling, characterized in that a cover is detachably mounted on the lighting device.

Attach the translucent upper cover to the instrument body with screws, attach the lower cover receiver for supporting the lower cover to the instrument body with screws, and attach the translucent cover to the instrument body and the instrument body. 2. The lighting device according to claim 1, wherein a common screw is used as a screw for attaching the lower cover receiver.

The ceiling-mounted lighting fixture according to claim 1 or 2, wherein a portion where the lower cover and the translucent upper cover are attached to the fixture body has a sealed structure with a gap with the outside of 1 mm or less.

The ceiling is provided with a ceiling-mounted ceiling closet outlet on the lower surface, wiring parts with locking projections on the outer periphery, and a mounting opening that opens up and down in the central part of the appliance body, and is attached and mounted. A retractable locking member provided with a spring force in a direction protruding into the mounting opening is provided on the inner surface of the mounting opening, the mounting opening is fitted into the wiring component, and the locking member is attached to the locking protrusion. The device body is attached to the wiring part by locking, and a plug of a hanging ceiling rosette provided on the equipment body is detachably connected to an outlet provided in the wiring part. The ceiling-mounted lighting device according to any one of the above.

The discharge lamp has a ring shape, and a lighting circuit and a control unit for controlling the lighting circuit are arranged inside the ring-shaped discharge lamp. The ceiling-mounted lighting fixture described.

The direct-mounted ceiling lighting device according to claim 5, wherein the lighting unit has an integral structure in which a control unit is disposed below the lighting circuit, and the control unit is provided with an LED that constitutes a nightlight.

The discharge lamp has an annular shape, and a discharge lamp supporting spring for supporting the annular discharge lamp and a lamp socket are mounted on the fixture main body so as to be freely displaceable in a diameter direction of the fixture main body. A lighting device directly mounted on a ceiling according to any one of claims 1 to 6.

The outer peripheral shape of the contact portion at the center of the appliance body is circular in a plan view, and the non-adhesive portion around the adherent portion of the appliance body is formed in a step shape so that the outer peripheral side is down, and the stepped non-adhesive portion is formed. The outer peripheral shape of the upper part, which is the inner peripheral side, is approximately oval in plan view, the outer peripheral shape of the lower step, which is the outer peripheral side of the step-shaped non-contact portion, is circular in plan view, and the outer peripheral shape is approximately oval in plan view. The lighting circuit and the control unit are attached to the non-contact portion of the upper portion, and a lighting opening is provided at the lower portion of the non-contact portion, and the lighting opening is covered with a light-transmitting upper cover. The ceiling-mounted lighting device according to claim 1.

The lighting device according to claim 1, wherein the light-transmitting upper cover is subjected to prism processing.

In plan view, the contact portion at the center of the fixture body is 50% or less of the area of the fixture body, and the lighting fixture size is φ350 to 900 mm in plan view, or 350 × 350 mm to 900 × 350 mm in plan view, or (in plan view) ( The ceiling-mounted lighting fixture according to any one of claims 1 to 9, wherein the dimension is 100 to 400 mm) x (500 to 1800 mm), and the gap between the non-contact portion and the ceiling is 30 to 70 mm.